150kHzから300MHzの低周波帯におけるEMI測定サイトの相関性の検討

摘要

AM·FMラジオ，電波時計，RF-ID等の300MHz以下の電磁波を意図的に利用する装置はすでに数多く普及している一方で、非接触給電装置や電磁調理器、LED照明、インバータなど300MHz以下の電磁ノイズを意図せずに放射してしまう装置が増加しており，これらの電子的装置に対して，300MHz以下の周波数におけるEMI(電磁妨害)試験の要求が国内外で高まっている。%While the low-frequency radio communication devices are wide-spreading, unintentional electromagnetic radiation from the electronic equipment such as LED lighting has been increasing. Therefore, the demand for EMI measurement in the lower frequency band of 150 kHz to 300 MHz is increasing. A number of test sites for EMI measurement has been constructed in Japan. However, there are few reports about the correlation and difference among test results conducted in these test sits. In this report, to examine the correlation among the test results conducted in some Japanese test sites, we compare the test results of radiation disturbance, conducted disturbance, and disturbance power measurements using a commercially available products.